If that is not sufficient, there is also an Anker application you may download that gives you far more information about the battery on your own smartphone.
The Airpow will not be a small power lender, but Baseus helps https://carajfws087642.theideasblog.com/30145465/an-unbiased-view-of-power-bank-cable-usb-cable-1000amh-power-bank-2000mah-power-bank-adapters-energizer-dubai